package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.utils.HttpUtils;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.auth.fegin.MemberFeginService;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.vo.SocialUser;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpResponse;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;

import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.HashMap;
import java.util.Map;

/**
 * 处理社交登录请求
 */
@Slf4j
@Controller
public class OAuth2Controller {

    @Autowired
    MemberFeginService memberFeginService;

    @GetMapping("/oauth2.0/weibo/success")
    public String weibo(@RequestParam("code")String code, HttpSession session, HttpServletResponse servletResponse) throws Exception {

        //1、根据code换取accessToken

        //https://api.weibo.com/oauth2/access_token?client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET&grant_type=authorization_code&redirect_uri=YOUR_REGISTERED_REDIRECT_URI&code=CODE
        Map<String,String> map = new HashMap<>();
        //TODO
        map.put("client_id","4164482104");
        map.put("client_secret","92a5db63d0ce4b9e562082a183119c94");
        map.put("grant_type","authorization_code");
        map.put("redirect_uri","http://auth.gulimall.com/oauth2.0/weibo/success");
        map.put("code",code);
        HttpResponse response = HttpUtils.doPost("https://api.weibo.com", "/oauth2/access_token", "post", new HashMap<String, String>(), new HashMap<String, String>(), map);

        //2、处理
        if(response.getStatusLine().getStatusCode() == 200){
            //响应成功，获取到了accessToken
            String json = EntityUtils.toString(response.getEntity());
            SocialUser socialUser = JSON.parseObject(json, SocialUser.class);

            //知道当前是哪个社交用户
            //1)、当前用户如果是第一次进网站，自动注册进来（为当前社交用户生成一个会员信息账号）
            //登录或者注册这个社交用户
            R oauthLogin = memberFeginService.oauthLogin(socialUser);
            if(oauthLogin.getCode() == 0){
                //2、登录成功跳回首页
                MemberRespVo data = oauthLogin.getData("data", new TypeReference<MemberRespVo>() {
                });
                log.info("登录成功，用户信息：{}",data.toString());
                //1、第一次使用session；命令浏览器保存卡号。JSESSIONID这个cookie
                //以后浏览器访问哪个网站就会带上这个网站的cookie
                //子域之间：gulimall.com auth.gulimall.com order.gulimall.com
                //发卡(cookie)的时候(指定域名为父域名)，即使是子域系统，也能让父域使用
                session.setAttribute("loginUser",data);
//                new Cookie("JSESSIONID","dadaa").setDomain("");
//                servletResponse.addCookie();
                return "redirect:http://gulimall.com";
            }else {
                return "redirect:http://auth.gulimall.com/login.html";
            }

        }else{
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }
}
